When Michael returns from Sicilia and is talking with Kay:

MICHAEL

My father's no different than any other powerful man --

(then, after Kay laughs)

-- Any man who's responsible for other people. Like a senator or a president.

KAY

You know how naive you sound?

MICHAEL

Why?

KAY

Senators and presidents don't have men killed...

MICHAEL

Oh -- who's being naïve, Kay?